CN214489195U - End socket butt-joint ring welding machine for steel cylinder production - Google Patents
End socket butt-joint ring welding machine for steel cylinder production Download PDFInfo
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- CN214489195U CN214489195U CN202120635951.1U CN202120635951U CN214489195U CN 214489195 U CN214489195 U CN 214489195U CN 202120635951 U CN202120635951 U CN 202120635951U CN 214489195 U CN214489195 U CN 214489195U
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Abstract
The utility model relates to a head butt-joint girth welding machine for steel bottle production, which comprises a machine base, a head clamping and fixing device, a welding device and a double-station workbench; the end enclosure clamping and fixing device is arranged at the upper end of the machine base and comprises a machine head part and a tail ejector rod part, and an end enclosure clamping and fixing position is arranged between the machine head part and the tail ejector rod part; the welding device is a pulse MAG welding device, and the welding action end of the pulse MAG welding device is aligned with the butt joint part of the upper seal head and the lower seal head arranged in the seal head clamping and fixing position; the double-station workbench is a workbench which can move in the front-back direction, the workbench is integrally arranged between the upper portion of the base and the lower portion of the end enclosure clamping fixing position, an end enclosure supporting frame capable of moving up and down is arranged at the upper rear portion of the double-station workbench to form a feeding station, a steel bottle supporting frame capable of moving up and down is arranged at the upper front portion of the double-station workbench to form a bottle falling station, and a bottle pushing mechanism enabling a steel bottle to be pushed to the chain type conveying belt is further arranged at the discharging station. The utility model discloses an automatic feeding, automatic weld, automatic unload bottle and automatic propelling movement output bottle.
Description
Technical Field
The utility model belongs to the technical field of liquefied gas steel bottle is made in the production, a steel bottle production facility is related to, concretely relates to steel bottle production is with head butt-joint girth welder.
Background
At present, the production process of the liquefied gas steel cylinder comprises the following steps: 1. manufacturing an upper end enclosure and a lower end enclosure by stretching; 2. the upper and lower end sockets are in butt joint and are welded annularly to form a bottle body; 3. tempering the bottle body; 4. carrying out air-tight seal detection; 5. performing shot blasting and derusting; 6. spraying a coating on the surface; 7. and carrying out high-temperature curing treatment.
At present, equipment for forming a bottle body by butt-joint and girth welding of two end sockets is simple, when the equipment is operated, firstly, manual feeding and alignment of the two end sockets are needed, then, the equipment carries out girth welding, after the girth welding is finished, the bottle is manually unloaded, and then, the bottle body is moved to a chain type conveying line. The operation occupies a long time, has high labor intensity and low production efficiency, has certain temperature after the bottle body is welded, is improper to operate, and easily causes harm to workers.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point, provide one kind can realize automatic feeding, automatic weld, unload bottle and automatic propelling movement output bottle automatically to can improve production efficiency, reduce intensity of labour's steel bottle production with head butt joint girth welder.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a steel bottle production is with head butt-joint girth welding machine which characterized in that: the device comprises a machine base, a sealing head clamping and fixing device, a welding device and a double-station workbench;
the end socket clamping and fixing device is arranged at the upper end of the machine base and comprises a machine head part and a tail ejector rod part, the two parts are oppositely arranged left and right, and an end socket clamping and fixing position is arranged between the two parts; the machine head part comprises a machine head box, a hollow rotating shaft which is horizontally arranged is arranged on the machine head box, and an annular clamping seat is fixedly arranged at the right end of the hollow rotating shaft and used for clamping the lower end enclosure; the left end of the hollow rotating shaft is connected with a driving motor through a transmission mechanism, a push rod is arranged in the hollow rotating shaft, the left end of the push rod is connected with a first driving cylinder arranged outside the left end of the machine head box, and the right end of the push rod is a left jacking end contacted with the bottom of the lower end enclosure; the tail ejector rod part comprises an ejector rod seat and an ejector rod which is arranged on the ejector rod seat and extends out of the left side of the ejector rod seat, the ejector rod seat is connected with the upper end of the machine seat in a sliding mode along the left-right direction through a linear guide rail pair, the ejector rod seat is connected with a second driving air cylinder, the ejector rod and the push rod are coaxially arranged, and the left end of the ejector rod is a right ejector end which is in contact with the top of the upper end enclosure;
the welding device is a pulse MAG welding device, and a welding action end of the welding device is aligned with the butt joint part of the upper seal head and the lower seal head arranged in the seal head clamping and fixing position;
the double-station workbench is movable along the front-back direction and is integrally arranged between the upper portion of the base and the lower portion of the seal head clamping fixing position, a seal head supporting frame capable of moving up and down is arranged at the rear portion of the double-station workbench to form a feeding station, a steel bottle supporting frame capable of moving up and down is arranged at the front portion of the double-station workbench to form a bottle falling station, and a bottle pushing mechanism enabling a steel bottle to be pushed to the chain type conveying belt is further arranged at the bottle falling station.
Further: the double-station workbench comprises a supporting plate, and the supporting plate is connected with the upper end of the machine base through a linear guide rail pair arranged in front and at back and is connected with a third driving cylinder arranged on the machine base; the seal head support frame and the steel cylinder support frame are arranged on the supporting plate.
Further, the method comprises the following steps: the end socket support frame comprises a rear bottom plate, two rear vertical guide shafts are fixed at the lower end of the rear bottom plate and inserted into two vertical guide holes formed in the rear part of the supporting plate, rear rod frames are respectively fixed at positions, close to the front side and the rear side, of the upper end of the rear bottom plate, rear support rods are respectively fixed on the two rear rod frames, the rear support rods are arranged along the left and right directions and are arranged in an equal-height parallel mode and used for supporting an upper end socket and a lower end socket which are butted, and an arc-shaped support frame used for supporting a lifting guardrail of the upper end socket is upwards welded at the right ends of the two rear support rods; a rear lifting cylinder is fixed at the rear part of the lower end of the supporting plate, and a cylinder rod of the rear lifting cylinder penetrates through a rear rod hole arranged on the supporting plate and is fixedly connected with the rear bottom plate.
Further, the method comprises the following steps: the steel cylinder support frame comprises a front bottom plate, two front vertical guide shafts are fixed at the lower end of the front bottom plate and inserted into two vertical guide holes arranged at the front part of the supporting plate, front rod frames are respectively fixed at the positions, close to the front and the back, of the upper end of the front bottom plate, front support rods along the left and right directions are respectively fixed on the two front rod frames, and the two front support rods are arranged in a ascending parallel mode and used for supporting bottle bodies formed by girth welding; the front part of the lower end of the supporting plate is fixed with a front lifting cylinder, and a cylinder rod of the front lifting cylinder penetrates through a front rod hole arranged on the supporting plate and is fixedly connected with a front bottom plate.
Further, the method comprises the following steps: the bottle pushing mechanism comprises a swinging shaft, the swinging shaft is supported above the supporting plate through shaft brackets positioned at the left end and the right end, two supporting arms are welded backwards and vertically on the swinging shaft, and the two supporting arms are respectively positioned outside the left end and the right end of the two front supporting rods; a driving arm is fixed at one end of the swinging shaft, and an L-shaped baffle is arranged on the machine base at a position corresponding to the driving arm; the supporting plate moves backwards to a sealing head clamping and fixing position aligned with and above a bottle falling station, the two supporting arms are supported on the supporting plate, the driving arm is arranged in a drooping mode, and the driving arm is separated from the L-shaped baffle; the supporting plate moves forwards to a sealing head clamping and fixing position above the feeding station, the driving arm is in contact with the vertical edge of the L-shaped baffle, the driving arm is pushed to an upward inclined position, the two supporting arms rotate to the upward inclined position along with the swinging shaft, and the bottles supported on the two front rod frames are pushed forwards to a conveying chain on the front side of the sealing head butt-joint ring welding machine along the two supporting arms.
The utility model has the advantages and positive effect:
1. the utility model discloses a cooperation of push rod and ejector pin realizes treating welded upper and lower head propelling movement to annular cassette in on the one hand, will treat the firm welded position that is fixed in of welded upper and lower head, and on the other hand can realize the bottle with weld forming from the propelling movement of weld fixation position to realize the bottle that falls smoothly.
2. The utility model discloses a but front and back reciprocating motion's duplex position workstation is followed, preceding station forms the bottle station that falls, realizes the whereabouts output of weld forming's bottle, and back station forms the material loading station, realizes will treating welded upper and lower head and align the material loading, cooperates foretell head centre gripping fixing device, has realized automatic feeding, automatic weld, has unloaded bottle and automatic propelling movement output bottle automatically, has increased substantially head butt joint girth welded degree of automation and production efficiency, has alleviateed workman's intensity of labour.
3. The utility model discloses a push away a bottle mechanism overall structure simple, structural design is ingenious, need not extra power supply.
Drawings
FIG. 1 is a front view of the present invention in a welding operation state;
FIG. 2 is a plan view of the present invention in a welding operation state;
FIG. 3 is a perspective view of the present invention in a welding operation state;
FIG. 4 is a schematic view of the structure of FIG. 3 with the bottle body removed;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a perspective view of the present invention in the state of automatic feeding and bottle body pushing;
FIG. 7 is a schematic view of the bottle body of FIG. 6 removed;
fig. 8 is a partial enlarged view at B in fig. 7.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative, not restrictive, and the scope of the invention should not be limited thereto.
The invention relates to a seal head butt-joint girth welding machine for steel cylinder production, which is shown in figures 1-8 and has the following invention points: comprises a machine base 1, a seal head clamping and fixing device 2, a welding device and a double-station workbench 3.
The head clamping and fixing device is arranged at the upper end of the machine base and comprises a head part 2.1 and a tail ejector rod part 2.2, the two parts are oppositely arranged left and right, and a head clamping and fixing position is arranged between the two parts. The head part comprises a head box 2.1.2, a horizontally arranged hollow rotating shaft 2.1.6 is installed on the head box, and an annular clamping seat 2.1.1 is fixedly installed at the right end of the hollow rotating shaft and used for clamping the lower sealing head part. The left end of the hollow rotating shaft is connected with a driving motor 2.1.4 through a transmission mechanism. The transmission can adopt gear engagement mechanism, also can adopt synchronous pulley mechanism, for example in the drawing, at the left end fixed mounting of hollow rotating shaft driven pulley 2.1.5, at driving motor's output fixed mounting have driving pulley 2.1.3, and driving pulley passes through synchronous belt drive and connects (the synchronous belt is not shown in the drawing). A push rod 2.1.7 is arranged in the hollow rotating shaft, the left end of the push rod is connected with a first driving cylinder 2.1.8 arranged outside the left end of the head box, and the right end of the push rod is a left jacking end in contact with the bottom of the lower end enclosure part. The tail ejector rod part comprises an ejector rod seat 2.2.2 and an ejector rod 2.2.3 which is arranged on the ejector rod seat and extends out of the left side of the ejector rod seat, the ejector rod seat is connected with the upper end of the machine seat in a sliding mode along the left-right direction through a linear guide rail pair, the ejector rod seat is connected with a second driving cylinder 2.2.1, the ejector rod and the push rod are coaxially arranged, and the left end of the ejector rod is a right jacking end which is in contact with the top of the upper end enclosure. The ejector rod is preferably arranged in an ejector rod hole formed in the ejector rod seat through a bearing, so that the ejector rod can synchronously rotate along with the upper end enclosure and the lower end enclosure in the welding process.
The welding device is a pulse MAG welding device, and a welding action end 4 of the welding device is aligned with the butt joint part of the upper seal head and the lower seal head arranged in the seal head clamping and fixing position. The welding device adopts the prior art, and is not described in detail herein.
The double-station workbench is movable along the front-back direction and is integrally arranged between the upper portion of the base and the lower portion of the seal head clamping fixing position, a seal head supporting frame capable of moving up and down is arranged at the rear portion of the double-station workbench to form a feeding station, a steel bottle supporting frame capable of moving up and down is arranged at the front portion of the double-station workbench to form a bottle falling station, and a bottle pushing mechanism enabling a steel bottle to be pushed to the chain type conveying belt is further arranged at the bottle falling station.
In the structure, the double-station workbench adopts the following specific structure:
the double-station workbench comprises a supporting plate 3.1, wherein the supporting plate is connected with the upper end of the machine base through linear guide rail pairs arranged in the front and at the back, and is connected with a third driving cylinder 3.2 arranged on the machine base. The seal head support frame and the steel cylinder support frame are arranged on the supporting plate.
The head support frame is used for supporting and positioning an upper head lower head to be welded, and mainly comprises a rear bottom plate 3.4, two rear vertical guide shafts 3.7 are fixed at the lower end of the rear bottom plate, the two rear vertical guide shafts are inserted into two vertical guide holes formed in the rear part of a supporting plate, a rear rod frame 3.5 is respectively fixed at the positions, close to the front side and the rear side, of the upper end of the rear bottom plate, a rear support rod 3.3 along the left-right direction is respectively fixed on the two rear rod frames, the two rear support rods are arranged in a highly parallel mode and are used for supporting the upper head and the lower head to be butted, and an arc-shaped towing frame 3.6 used for supporting a lifting guardrail of the upper head is upwards welded at the right end of the two rear support rods. A rear lifting cylinder is fixed at the rear part of the lower end of the supporting plate, and a cylinder rod 3.8 of the rear lifting cylinder penetrates through a rear rod hole arranged on the supporting plate and is fixedly connected with the rear bottom plate.
The steel bottle support frame is used for supporting the bottle as an organic whole that the girth welding is as an organic whole, mainly include preceding bottom plate 3.11, the lower extreme of bottom plate is fixed with two preceding vertical guiding axles 3.12 in the front, two preceding vertical guiding axles insert to set up in two vertical guiding holes of layer board front portion, the position that is close to the front and back in the upper end of bottom plate in the front respectively is fixed with a preceding bridge 3.10, respectively be fixed with a preceding bracing piece 3.9 along left right direction on two preceding bridges, the bracing piece parallel arrangement that ascends a height before two, be used for supporting the fashioned bottle of girth welding. A front lifting cylinder is fixed at the front part of the lower end of the supporting plate, and a cylinder rod 3.13 of the front lifting cylinder penetrates through a front rod hole arranged on the supporting plate and is fixedly connected with the front bottom plate.
The bottle pushing mechanism is used for pushing a steel bottle falling on a steel bottle supporting frame forwards to a conveying chain and mainly comprises a swinging shaft 3.16, the swinging shaft is supported above a machine base through shaft brackets 3.18 positioned at the left end and the right end, two supporting arms 3.14 are vertically welded backwards on the swinging shaft and are respectively positioned outside the left end and the right end of two front supporting rods (the length of the front supporting rods is shorter than that of the steel bottle so as to reserve spaces for arranging the two supporting arms at the two ends of the lower part of the steel bottle). A driving arm 3.15 is fixed at one end of the swinging shaft, and an L-shaped baffle 3.17 is arranged on the machine base at the position corresponding to the driving arm. The support plate moves backwards to a bottle falling station to align a seal head clamping and fixing position above the bottle falling station, the two support arms are supported on the support plate, the driving arm is arranged in a drooping mode and is separated from the L-shaped baffle, and the upper ends of the two support arms are away from the lower end of the welded bottle body by a certain distance. The supporting plate moves forwards to a sealing head clamping and fixing position above the feeding station, the driving arm is in contact with the vertical edge of the L-shaped baffle, the driving arm is pushed to an upward inclined position, the two supporting arms rotate to the upward inclined position along with the swinging shaft, and the bottles supported on the two front rod frames are pushed forwards to a conveying chain on the front side of the sealing head butt-joint ring welding machine along the two supporting arms.
The utility model discloses a theory of operation does:
firstly, a third driving cylinder is started to enable a double-station workbench to move backwards to a rear working position, an operator on the working position enables an upper seal head and a lower seal head to be placed on two rear supporting rods in a butt joint mode and enables a lifting guardrail on the upper seal head to be supported on an arc-shaped bracket, then the third driving cylinder moves backwards to enable the double-station workbench to move forwards to a front working position, in the working position, a rear lifting cylinder moves to enable an end enclosure supporting frame to drive the upper seal head and the lower seal head to move to the upper working position, the centers of the two seal heads are overlapped with the centers of a push rod and a push rod, then the first driving cylinder and the second driving cylinder extend out simultaneously to respectively drive the push rod to move rightwards and the push rod to move leftwards, the push rod and the push rod respectively press the bottom of the lower seal head and the top of the upper seal head, then the rear lifting cylinder moves backwards to enable the end enclosure supporting frame to move to the lower working position and be separated from contact with the two butted seal heads, then the first driving cylinder retracts, meanwhile, the second driving cylinder continues to extend, the push rod and the ejector rod drive the two seal heads to move leftwards, the bottom of the lower seal head is inserted into the annular clamp seat to realize fastening, the push rod retracts and resets at the moment, the push rod is separated from the bottom of the lower seal head, and the ejector rod continues to press the top of the upper seal head; then a driving motor starts and starts a welding device to drive the two seal heads to rotate slowly to carry out ring seal welding, in the welding process, the double-station workbench moves backwards to a rear working position, and a next group of upper and lower seal heads to be welded are manually placed on the seal head support frame in a butt joint mode; after the two welded seal heads rotate for one circle to complete ring welding, the driving motor and the welding device are closed; the second driving cylinder retracts to enable the end part of the ejector rod to be separated from the top of the bottle body, then the first driving cylinder extends out, the bottle body is pushed out through the push rod, meanwhile, the front lifting cylinder extends out, the steel bottle support frame moves upwards to receive the falling bottle body, and the bottle body is supported on the two front support rods; and then the double-station workbench moves forwards to a front working position, in the process of moving forwards, the driving arm swings backwards and upwards under the action of the L-shaped baffle, the two support arms synchronously swing upwards and forwards, the upper ends of the two support arms are in contact with the lower end of the bottle body, forward thrust is applied to the bottle body along with the increase of the swing angle of the support arms, so that the steel bottle rolls onto a conveying chain outside the front side of the ring welding machine along the two support arms, and the steel bottle is conveyed to next process equipment along with the operation of the conveying chain in the subsequent process. Meanwhile, another group of to-be-welded seal heads which are placed on the seal head supporting frame are lifted and clamped and pushed to the annular clamping seat, so that automatic feeding is synchronously completed in the process of automatically pushing the steel cylinders to the conveying chain. In the process, the main work of an operator is to butt-joint the upper and lower seal heads to be welded on the seal head support frame in the welding process, and compared with the existing welding process, other operations are completed manually, so that the labor intensity is greatly reduced, and the production efficiency and the production safety are improved.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims, and therefore, the scope of the present invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (5)
1. The utility model provides a steel bottle production is with head butt-joint girth welding machine which characterized in that: the device comprises a machine base, a sealing head clamping and fixing device, a welding device and a double-station workbench;
the end socket clamping and fixing device is arranged at the upper end of the machine base and comprises a machine head part and a tail ejector rod part, the two parts are oppositely arranged left and right, and an end socket clamping and fixing position is arranged between the two parts; the machine head part comprises a machine head box, a hollow rotating shaft which is horizontally arranged is arranged on the machine head box, and an annular clamping seat is fixedly arranged at the right end of the hollow rotating shaft and used for clamping the lower end enclosure; the left end of the hollow rotating shaft is connected with a driving motor through a transmission mechanism, a push rod is arranged in the hollow rotating shaft, the left end of the push rod is connected with a first driving cylinder arranged outside the left end of the machine head box, and the right end of the push rod is a left jacking end contacted with the bottom of the lower end enclosure; the tail ejector rod part comprises an ejector rod seat and an ejector rod which is arranged on the ejector rod seat and extends out of the left side of the ejector rod seat, the ejector rod seat is connected with the upper end of the machine seat in a sliding mode along the left-right direction through a linear guide rail pair, the ejector rod seat is connected with a second driving air cylinder, the ejector rod and the push rod are coaxially arranged, and the left end of the ejector rod is a right ejector end which is in contact with the top of the upper end enclosure;
the welding device is a pulse MAG welding device, and a welding action end of the welding device is aligned with the butt joint part of the upper seal head and the lower seal head arranged in the seal head clamping and fixing position;
the double-station workbench is movable along the front-back direction and is integrally arranged between the upper portion of the base and the lower portion of the seal head clamping fixing position, a seal head supporting frame capable of moving up and down is arranged at the rear portion of the double-station workbench to form a feeding station, a steel bottle supporting frame capable of moving up and down is arranged at the front portion of the double-station workbench to form a bottle falling station, and a bottle pushing mechanism enabling a steel bottle to be pushed to the chain type conveying belt is further arranged at the bottle falling station.
2. A head butt ring welder for steel cylinder production according to claim 1, characterized in that: the double-station workbench comprises a supporting plate, and the supporting plate is connected with the upper end of the machine base through a linear guide rail pair arranged in front and at back and is connected with a third driving cylinder arranged on the machine base; the seal head support frame and the steel cylinder support frame are arranged on the supporting plate.
3. A head butt ring welder for steel cylinder production according to claim 2, characterized in that: the end socket support frame comprises a rear bottom plate, two rear vertical guide shafts are fixed at the lower end of the rear bottom plate and inserted into two vertical guide holes formed in the rear part of the supporting plate, rear rod frames are respectively fixed at positions, close to the front side and the rear side, of the upper end of the rear bottom plate, rear support rods are respectively fixed on the two rear rod frames, the rear support rods are arranged along the left and right directions and are arranged in an equal-height parallel mode and used for supporting an upper end socket and a lower end socket which are butted, and an arc-shaped support frame used for supporting a lifting guardrail of the upper end socket is upwards welded at the right ends of the two rear support rods; a rear lifting cylinder is fixed at the rear part of the lower end of the supporting plate, and a cylinder rod of the rear lifting cylinder penetrates through a rear rod hole arranged on the supporting plate and is fixedly connected with the rear bottom plate.
4. A head butt ring welder for steel cylinder production according to claim 2, characterized in that: the steel cylinder support frame comprises a front bottom plate, two front vertical guide shafts are fixed at the lower end of the front bottom plate and inserted into two vertical guide holes arranged at the front part of the supporting plate, front rod frames are respectively fixed at the positions, close to the front and the back, of the upper end of the front bottom plate, front support rods along the left and right directions are respectively fixed on the two front rod frames, and the two front support rods are arranged in a ascending parallel mode and used for supporting bottle bodies formed by girth welding; the front part of the lower end of the supporting plate is fixed with a front lifting cylinder, and a cylinder rod of the front lifting cylinder penetrates through a front rod hole arranged on the supporting plate and is fixedly connected with a front bottom plate.
5. A head butt ring welder for steel cylinder production according to claim 4, characterized in that: the bottle pushing mechanism comprises a swinging shaft, the swinging shaft is supported above the supporting plate through shaft brackets positioned at the left end and the right end, two supporting arms are welded backwards and vertically on the swinging shaft, and the two supporting arms are respectively positioned outside the left end and the right end of the two front supporting rods; a driving arm is fixed at one end of the swinging shaft, and an L-shaped baffle is arranged on the machine base at a position corresponding to the driving arm; the supporting plate moves backwards to a sealing head clamping and fixing position aligned with and above a bottle falling station, the two supporting arms are supported on the supporting plate, the driving arm is arranged in a drooping mode, and the driving arm is separated from the L-shaped baffle; the supporting plate moves forwards to a sealing head clamping and fixing position above the feeding station, the driving arm is in contact with the vertical edge of the L-shaped baffle, the driving arm is pushed to an upward inclined position, the two supporting arms rotate to the upward inclined position along with the swinging shaft, and the bottles supported on the two front rod frames are pushed forwards to a conveying chain on the front side of the sealing head butt-joint ring welding machine along the two supporting arms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120635951.1U CN214489195U (en) | 2021-03-26 | 2021-03-26 | End socket butt-joint ring welding machine for steel cylinder production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120635951.1U CN214489195U (en) | 2021-03-26 | 2021-03-26 | End socket butt-joint ring welding machine for steel cylinder production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214489195U true CN214489195U (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120635951.1U Active CN214489195U (en) | 2021-03-26 | 2021-03-26 | End socket butt-joint ring welding machine for steel cylinder production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214489195U (en) |
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2021
- 2021-03-26 CN CN202120635951.1U patent/CN214489195U/en active Active
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